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There are 3 red balls and 7 green balls ...

There are 3 red balls and 7 green balls in a bag, 8 red and 7 green balls in another.
i) Whạt is the probability of getting a red ball from the first bag?
ii) From the second bag?
iii) If all the balls are put in a single bag, what is the probability of getting a red ball from it?

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